catch block not working in c++ native library

Question

I am writing a java native library in c++, and using exception handling within native lib itself, but the library crashes as soon as I throw exception. Here is my simple test program, when I call it from Java test, it just crashes as soon as exception is thrown. The catch block is not working. Any ideas what i am missing. Thanks.

#include "Test.h"
#include <iostream>

JNIEXPORT void JNICALL Java_Test_helloWorld(JNIEnv *, jobject)
{
    std::cout<<"Hello World";
    try {
        throw 1;
    }
    catch(int )
    {
        std::cout<<" catch int block"<<std::endl;
    }
    catch(...)
    {
        std::cout<<" catch block"<<std::endl;
    }
}

Compile and Link:

g++ -m64 -fPIC -fexceptions -c test.cpp
g++ -shared -m64 -Wl,-soname,libtest.so -Wl,-shared-libgcc test.o -o libtest.so

$ java  -d64 -Djava.library.path=/home/vkumar/projects/test -cp $CLASSPATH Test
terminate called after throwing an instance of 'int'
terminate called recursively
Hello World^CAbort (core dumped)

Answer 1

I tried your examplea and everything went fine. My environment is Ubuntu 12.04 (64bit) with Oracle JDK 1.7.

So, my guess is your environment is the culprit. Since you use option -m64, it could be a mismatch between 32 bit system and 64 bit libtest.so.

Please verify your system, JDK, gcc, etc. fits all together.